U.S. Patent 11144665 was awarded to INTERNATIONAL BUSINESS MACHINES CORPORATION on October 12, 2021 and is entitled “Purpose-based data access control.” The first named inventor is Sima Nadler of Kochav Yair, . The abstract contains an overview of the patent disclosure:

Method, apparatus and product for purpose-based data access control. Having a data about a subject, for which usage is approved for a purpose, a first encryption key associated with the first purpose is obtained. A link pointing to a first alias of the data is generated, the first alias being associated with the first purpose. The link pointing to the first alias is encrypted with the first encryption key to obtain a first encrypted link; and access is provided to the first encrypted link, whereby access to the data is obtainable by decrypting the first encrypted link with the first decryption key to obtain the first alias and using the first alias to access the data. In some cases, a second link for a second can be similarly generated. Upon revocation of approval, a corresponding alias is eliminated to prevent access thereby. The links may be retained in a decentralized ledger, such as a blockchain. Link to Full Patent

This blockchain patent was originally filed on October 16, 2018  as U.S. Patent Application 16/161105 at the United Stated Patent and Trademark Office. The application was them awarded a patent grant and published as U.S. Patent 11144665. The primary examiner was Kevin Bechtel.

INTERNATIONAL BUSINESS MACHINES CORPORATION, who is the original assignee of this patent, has at least 150818 total granted patents in the United States as of the date of this article. This blockchain patent has been cited 0 times by other U.S. patents according to our law firm research, and can be considered an innovative patent in the field of cryptocurrency and blockchain.

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